Servers & virtualization
Windows and Linux server administration, service hardening, access design, uptime-focused deployment, patch planning, and operational troubleshooting.
Windows ServerLinuxServices
IT Security Specialist
Securing infrastructure from server room to edge firewall.
I’m Suman Chakraborty, an IT professional focused on reliable, secure, and maintainable environments across servers, routers, firewalls, operating systems, applications, and business-critical network services.
What I handle
Security work grounded in real infrastructure.
The site is structured like strong IT and cybersecurity portfolios: a clear skills overview, highlighted practical domains, and selected implementation work instead of generic marketing copy.
Routers, switching & connectivity
Routing, LAN design, wireless performance, WAN stability, segmentation planning, and fault isolation across mixed office and client environments.
RoutingSwitchingWiFi
Firewall & perimeter security
Policy design, VPN access, traffic control, secure internet breakout, and day-to-day firewall operations with business continuity in mind.
Firewall rulesVPNMonitoring
Applications & business systems
Operational support for business applications, authentication flows, database-backed systems, and user-facing services that need to stay secure and usable.
PHP · MySQLMicrosoft 365Google Workspace
Core priorities
Protect first. Keep it usable. Document everything.
My work style balances security controls with uptime, performance, and supportability, so the environment remains safe without slowing daily operations.
Identity accessControlled
Perimeter exposureReduced
Operational recoveryPlanned
Change visibilityDocumented
Selected work
Projects framed as outcomes, not just tools.
Strong network and cybersecurity portfolios typically present projects, certifications, practical skills, and clear contact paths. This section follows that model with concise operational examples.
Secure office and client network environments with managed edge protection.
Designed and maintained environments where routers, firewall rules, switching, wireless coverage, and endpoint access all had to work together reliably. The focus stays on reducing avoidable risk while keeping the business online and supportable.
Network edgeFirewall · VPN · Routing
Platform layerServer roles · OS hardening
Business layerUsers · Apps · Support
Cloud and identity support
Deployment and support work across Microsoft 365 and Google Workspace, with attention to access management, user continuity, and service integration.
Custom application operations
Support and deployment for PHP and MySQL-backed systems where infrastructure decisions directly affect performance, availability, and security.
Security-first troubleshooting
Root-cause analysis across connectivity, permissions, service failures, and user-reported issues without losing sight of policy and auditability.
Working method
From assessment to implementation to support.
The most credible professional sites in this field show both technical breadth and a repeatable way of working. This timeline keeps the process concrete and easy to scan.
Understand risk, dependency, and operational constraints.
Review the environment across connectivity, server roles, access paths, applications, and user impact before introducing changes.
Apply practical controls at the right layers.
Strengthen firewall policy, service exposure, account access, patch state, segmentation, and remote access without overcomplicating the environment.
Keep systems documented, supportable, and resilient.
Maintain handover clarity, service visibility, and troubleshooting paths so the environment continues to run after the initial deployment.
Contact
Need help with infrastructure security or operations?
Reach out for server, network, firewall, cloud, and application support.
NameSuman Chakraborty
FocusIT Security • Servers • Routers • Firewall • OS • Applications
BaseWest Bengal, India
Phone+91 9836008008
Email[email protected]
LinkedInlinkedin.com/in/sumandotcom